JP3313382B2 - Foaming nozzle for sprayer installation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foaming nozzle mounted on, for example, a spin type spray nozzle of a trigger type sprayer.

[0002]

2. Description of the Related Art For example, as shown in Japanese Utility Model Publication No. 63-69579,
When the foaming nozzle is attached to the spinning spray nozzle of the trigger sprayer and the trigger of the sprayer is pulled, the mist group that spins out from the spray nozzle collides with the inner wall surface of the foaming nozzle mouth and mixes with the outside air. There has been known an apparatus provided so as to foam and blow out from a mouth of a foaming nozzle as a mixed group of fog and foam.

[0003]

The above-mentioned conventional foaming nozzle is formed in a cylindrical shape. When a trigger type sprayer equipped with the nozzle is operated, a hollow cone is formed from the spray hole through a spin passage of the sprayer. The outer surface of the mist group that had been spouted into a shape hit the opening of the foaming nozzle and foamed, and was spouted out as a mixed group of mist and foam. Therefore, for example, when the detergent is sprayed on the window glass, the mixed group adheres in a circular shape. Therefore, when the detergent is directly sprayed on the corner of the window glass, there is a disadvantage that the detergent protrudes to the periphery and also adheres to the window frame or the like.

According to the present invention, such a disadvantage is eliminated so that a mixed group of bubbles or the like ejected adheres to a spraying surface such as a window glass in a triangular shape, and the corner is formed at the corner of the window glass. By spraying on the corners and the like, the adhesion to the window frame and the like is eliminated as described above, so that the adhesion can be performed effectively without waste.

[0005]

As a first means, in a foaming nozzle mounted on a front end of a spin type spray nozzle of a sprayer, the foaming nozzle is formed in a triangular cylindrical shape and forms a front end face as a cylindrical mouth. Each side is formed in an arc-shaped recess, and many of the high-density portions of the outer periphery of the hollow cone-shaped fog group, which are ejected while rotating at high speed from the spray holes of the spray nozzle, collide with the inner surface of the intermediate portion of each side. Also, at the corners of the mouth, the outer surface of the high-density portion was formed so as to be able to pass through while being close to each corner.

[0006] As a second means, the above-mentioned first means is provided, and the cross section of the foaming nozzle is an equilateral triangle.

[0007]

When the spraying operation is performed with the spray nozzle 2 directed forward, the liquid spouts forward while rotating at a high speed through a known spin passage 4 provided on the inner surface of the spray hole 3. Due to the high speed rotation, the liquid is atomized immediately, and many of the particles of each mist draw a spiral trajectory whose diameter increases as the distance from the spray hole increases. A substantially hollow conical shape at an angle, that is, a ring shape having a wide cross section, a high density of the outer peripheral portion, and a central portion excluding the high-density ring-shaped portion becomes thin and tends to pass through the foaming nozzle 7. . At the mouth position of the nozzle front end, the outer diameter of the mist group 10 is larger than the inscribed circle 12 of the mouth and smaller than the circumscribed circle. Collides and foams are scattered. The scattered bubbles collide with and mix with the mist that is going to pass through the mouth without colliding, forming a mixed group 11 of the mist and the bubbles and squirting from the mouth. An arcuate concave portion 9 for adjusting the collision amount and range is provided on the front end face of the mouth, and the concave portion corrects the ejection direction of the outer peripheral portion of the mixing group such as bubbles by adjusting the amount of the collision and the range. The mixed group is jetted as a triangular cross-section similar to the above-mentioned mouth, where the inscribed circle gradually increases in diameter.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a first embodiment shown in FIGS. 1 to 3 will be described.
Is a spin type spray nozzle fitted to the front of the liquid jet tube, which has a spray hole 3 at the center of the front wall thereof, and the liquid which has passed through the well-known spin passage 4 under high pressure while rotating at high speed. The spray holes 3 are provided so as to be ejected as a group of mist having a hollow cone shape. A cylindrical portion 5 protrudes forward from the outer periphery of the front end surface of the spray nozzle 2, and a cylindrical body 6 with a foaming nozzle is fitted in the cylindrical portion. The tubular body forms a cylinder with openings at both front and rear end faces, and the foaming nozzle 7 is coaxially connected to the tubular body by three support pieces 6a protruding at equal intervals from the rear inner surface.

The foaming nozzle 7 has a substantially triangular cylindrical shape, and the central axis of the foaming nozzle is located on an extension of the central axis of the spray hole. As shown in the figure, a fog guide piece 8 may be provided on the inner surface of the cylindrical wall portion forming the foaming nozzle.
An arc-shaped concave portion 9 is formed on the front end surface of each side of the mouth formed by the front portion of the foaming nozzle. The arc-shaped concave portion is, as described above, a fog group that is going to pass through the mouth of the foaming nozzle 7.
10 Along with adjusting the amount and range of collision between the outer surface and the inner surface of the mouth, the mixed group 11 of bubbles and the like generated by the collision gradually increases the inscribed circle 12 of the mouth in a manner similar to the above-mentioned mouth. It can be ejected in an equilateral triangular cross section.

[0010] Since the fog group 10 which spins out has a high density only at the outer peripheral portion, when the entire high density portion 10c between the straight lines 10a and 10b collides with the inner surface of the mouth, bubbles generated by the collision and scattered bubbles are generated. The outer peripheral surface of the mixed group 11 with the mist that has collided has its direction corrected as indicated by the arrow 13 and attempts to squirt toward the front of the nozzle, but the collision area 14 is reduced and it will pass through the mouth until collision does not occur As the remaining high-density portion 10c increases, it is drawn in the ejection direction and ejects.

In the case of the embodiment of the present invention in which the mouth portion has an equilateral triangle shape, as shown in FIG. 3, an arc-shaped concave portion 9 of the same size is provided between both ends of each side with a maximum recess at the middle of each side. In the middle part of each side, the fog group high density part 10 between the lines 10a and 10b
Most of the collisions occur, and the collision area 14 decreases as approaching both ends of each side. At both ends of each side, that is, at the front end of the corner of the opening of the equilateral triangle, the outer surface of the fog group is close as shown in FIG.設 け る Provide to pass. FIG. 3 shows the shape of the collision area 14 between the arcuate concave portion 9 and the high-density portion 10c of the fog group.

In the second embodiment shown in FIGS. 4 to 10, the cross section of the mixed group 11 of bubbles and the like ejected from the foaming nozzle 7, that is, the shape 11a of the bubbles and the like adhered to the window glass or the like by spraying has a right angle. It is provided so as to have an isosceles triangle shape. In the case of this embodiment, the foaming nozzle 7 is also a right-angled isosceles triangular cylinder, and an arc-shaped concave portion 9 is formed on the front end face of the nozzle.

In the case of the second embodiment, the right-angled isosceles triangle includes a portion extending from the center of the inscribed circle 12 to the acute-angled portion 15 and a right-angled portion 16.
And the distance from the center to the middle of two sides sandwiching the right angle and to the middle of the other side. Therefore, in a structure in which the center of the inscribed circle 12 is located on the extension of the central axis of the spray hole 3, the outer peripheral surface of the mist group 10 ejected in a hollow conical shape from the spray hole 3 firstly contacts the inscribed circle. After colliding with the portion where each side comes into contact, as the outer peripheral surface increases in diameter and moves forward, the collision area 14 is expanded in the circumferential direction to the inner surface front end of the right-angled portion, and the diameter is further increased by increasing the diameter. Reach the inner front edge.

In order to change the cross-sectional shape of the mixed group 11 of fog and bubbles generated by colliding the sprayed mist with the inner surface of the mouth, and to spray the mist group so that the shape gradually expands, it is necessary to use the mist group. As described above, it is necessary to provide at least a part of the high-density portion 10c on the outer peripheral side of the fog group so as not to collide with the inner surface of the mouth. In the mouth part where the outer peripheral surface of the group hits, the mist of the high density part that passes through without collision is the least, and in the mouth part that collides the latest, the fog of the high density part that passes through without collision is the most. Thus, the scattering direction of the outer surface of the mixing group, such as bubbles generated by the collision, must be corrected so that the overall shape is an isosceles triangle having a right-angle cross section, and the triangle must be gradually enlarged. Therefore FIG.
As shown in FIG. 7, the right-angled portion 16 is shorter than the acute-angled portion 15 to form the arc-shaped concave portion 9 in the front end face of each side.
In the acute angle portion 15, the outer surface of the high-density portion 10c of the fog group is provided so as to approach and pass without collision.

FIG. 9 shows the ratio between the amount of the high-density portion 10c of the fog group colliding with the inner surface of the opening of the foaming nozzle 7 and the amount scattered without collision. FIG. 9A shows the acute angle of the foaming nozzle. FIG. B shows a right angle portion, and FIG. C shows each side portion 17 where the inscribed circle 12 and each side inner edge shown in FIG. The modified ejection direction of the outer surface of the mixing group 11 such as bubbles generated by the collision is shown. In the case of FIG. 7A, as the fog approaches the front end of the acute angle portion 15 as the front end of the foaming nozzle 7, bubbles already foamed in the portions of FIGS. The density state is reduced, and the mixture forms a mixed group 11 of fog and foam and squirts from the mouth. FIGS. 10A and 10B show the range of collision of the fog group with respect to the inner surface of the foam nozzle opening.

As the desirable shape of the foaming nozzle, the equilateral triangular cylinder has been shown and described in the first embodiment and the right-angled isosceles triangular cylinder has been shown and described in the second embodiment, but it is needless to say that other triangular cylinders may be used. Absent. In that case, it is necessary to form an arcuate concave portion on the front end face of each side of the mouth in accordance with the case of the second embodiment.

The mist ejection angle of the mist group is determined by many other conditions such as the number of rotations of the spray pressure spin, the length and diameter of the spray hole, and so the sprayer for mounting the foaming nozzle is manufactured with the same dimensions. It needs to be. For fine adjustment of the spray angle, the spray nozzle 2 is
Alternatively, it is desirable that the cylinder 6 with the foaming nozzle is screwed to the spray nozzle 2 and the spray nozzle is provided to the injection pipe or the cylinder 6 can be screwed to the spray nozzle.

[0018]

According to the present invention, which has the above-mentioned structure, the present invention is configured as described in claim 1, and a mixture of bubbles generated by collision with the inner surface of the mouth and mist which has collided with the bubbles. Despite almost losing the ejection power to the outside, the nozzle 11 can pass through the corners without being hit by the mouth, be attracted to the mist having the ejection power, and can be ejected as a mist bubble mixing group having a triangular cross section. Thus, for example, by spraying on a window glass or the like, adhesion of a triangular mist mixture group is obtained, and by spraying a detergent so that the triangular corners of the mist mixture group coincide with the corners of the window glass, the glass is sprayed. Detergent can be sprayed without wasting by avoiding spraying on the peripheral portion off the window. According to the second aspect of the present invention, the equilateral triangular mist bubble mixture group having the same angle can be obtained.
Therefore, there is no need to spray the cone portion of the mist bubble mixture group that is larger than the corner portion of the sprayed surface to stain the periphery.

[Brief description of the drawings]

FIG. 1 is a sectional view of a mouth of a trigger type sprayer equipped with a foaming nozzle according to a first embodiment of the present invention.

FIG. 2 is a front view of the mouth part of FIG. 1;

FIG. 3 is an operation explanatory view of the foaming nozzle.

FIG. 4 is a sectional view of a mouth of a trigger type sprayer equipped with a second embodiment foaming nozzle.

FIG. 5 is a front view of the mouth part of FIG. 4;

FIG. 6 is an explanatory diagram of a mist bubble mixing group ejected from the foaming nozzle.

FIG. 7 is an explanatory view of the side shape of the foaming nozzle.

FIG. 8 is an explanatory diagram of the front shape of the foaming nozzle.

FIG. 9 is an explanatory view showing the relationship of the mist group to the inner surface of each part at the front end of the foaming nozzle.

FIG. 10 is an explanatory diagram showing a collision range of a fog group with respect to the inner surface of the mouth of the foaming nozzle.

[Explanation of symbols]

 2 spray nozzle 3 spray hole 7 foaming nozzle 9 arc-shaped recess 10 fog group 11 mixture group of fog and foam

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B05B 1/02 101 B05B 11/00 102 B65D 47/34

Claims (2)

(57) [Claims] 1. A foaming nozzle mounted on a front end of a spin-type spray nozzle of a sprayer, wherein the foaming nozzle is formed in a triangular cylindrical shape and each side forming a front end surface as a cylindrical mouth is formed in an arc-shaped concave portion, respectively. Many of the high-density portions of the outer periphery of the hollow conical mist group, which are ejected from the spray holes of the spray nozzle while rotating at a high speed, collide with the inner surface of the intermediate portion of each side, and are located at the corners of the mouth. The foaming nozzle for attaching a sprayer, wherein the outer surface of the high-density portion is formed so as to be able to pass while being close to each corner. 2. The foaming nozzle according to claim 1, wherein a cross section of the foaming nozzle is a regular triangle.